CN216733761U - Electric drive axle and vehicle - Google Patents
Electric drive axle and vehicle Download PDFInfo
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- CN216733761U CN216733761U CN202220415528.5U CN202220415528U CN216733761U CN 216733761 U CN216733761 U CN 216733761U CN 202220415528 U CN202220415528 U CN 202220415528U CN 216733761 U CN216733761 U CN 216733761U
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- output shaft
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- sun gear
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Abstract
The utility model provides an electric drive axle and a vehicle, wherein the electric drive axle comprises a driving component, and the driving component comprises at least two motors; the speed reduction box assembly comprises at least one speed reduction planetary gear set, a speed reduction sun gear and a differential mechanism, the differential mechanism comprises a power input part and a power output part, the power input part is coupled with the speed reduction sun gear, and the two motors are respectively in meshing transmission with the speed reduction sun gear through the speed reduction planetary gear set; and the two wheel assemblies are respectively arranged on two sides of the speed reduction box assembly and are respectively in transmission connection with the power output part. The motor is started according to the torque required by the vehicle, the motor is not interfered with each other, the risk of no power interruption is achieved, the safe and reliable running of the vehicle is ensured, the overall structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
Description
Technical Field
The utility model relates to the technical field of automobile manufacturing, in particular to an electric drive axle and a vehicle.
Background
The electric drive axle is an electromechanical integrated drive system designed for the electric automobile and has the advantages of high integration degree, small volume, low energy consumption and the like. As a core component of an electric vehicle, its performance directly affects the dynamic performance and the economical efficiency of the electric vehicle. The electric drive axle mainly comprises a motor, a reduction gearbox, wheels and the like, the motor outputs torque and is transmitted to the wheels through the reduction gearbox, the number of the motors of the traditional electric drive axle is only one, and the requirements of dynamic property are met, so that the motor is required to be large in size and mass, the occupied large arrangement space of a vehicle chassis is caused, and the smoothness of the vehicle is also influenced. In addition, when the motor is damaged, the phenomenon of power interruption can occur, and the use of the vehicle is further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an electric drive axle and a vehicle which are light in unsprung weight, realize no power interruption and run safely and reliably.
According to an object of the present invention, there is provided an electric drive axle including:
the driving assembly comprises at least two motors;
the speed reduction box assembly comprises at least one speed reduction planetary gear set, a speed reduction sun gear and a differential mechanism, the differential mechanism comprises a power input part and a power output part, the power input part is coupled with the speed reduction sun gear, and the two motors are respectively in meshing transmission with the speed reduction sun gear through the speed reduction planetary gear set;
and the two wheel assemblies are respectively arranged on two sides of the speed reduction box assembly and are respectively in transmission connection with the power output part.
As a preferred embodiment, the reduction planetary gear set includes:
the motor is in transmission connection with the input planet wheel;
an intermediate planet gear meshed with the input planet gear;
and the output planetary gear is in transmission connection with the intermediate planetary gear, and is meshed with the reduction sun gear.
In a preferred embodiment, the drive assembly further includes a plurality of shift mechanisms, the number of the shift mechanisms is equal to that of the electric motors, and each of the electric motors is in transmission connection with the reduction planetary gear set through a shift mechanism.
As a preferred embodiment, the wheel assembly comprises:
a wheel;
and the power output part is in transmission connection with the wheels through the speed change mechanism.
As a preferred embodiment, the speed change mechanism includes:
a speed change ring gear;
a speed change sun gear which is positioned inside the speed change ring gear, and the speed change sun gear 322 is in transmission connection with the power output part;
and the speed change planet wheels are meshed between the speed change inner gear ring and the speed change sun wheel and are in transmission connection with the wheels.
As a preferred embodiment, the transmission mechanism is integrally disposed inside the wheel.
In a preferred embodiment, the vehicle further comprises two output shaft assemblies, and one output shaft assembly is connected between each wheel assembly and the power output portion.
In a preferred embodiment, the output shaft assembly includes a first output shaft, a second output shaft, a third output shaft and two output flanges, the output flanges are connected between the second output shaft and the first output shaft and between the second output shaft and the third output shaft respectively, the first output shaft is in transmission connection with the power output part, and the third output shaft is in transmission connection with the change speed sun gear.
In a preferred embodiment, the two motors of the same reduction planetary gear set are in transmission connection and are respectively arranged on two sides of the reduction gearbox component.
According to another object of the utility model, the utility model also provides a vehicle, which comprises the electric drive axle of the above embodiment, and the vehicle further comprises a frame, wherein the electric drive axle is integrally fixed on the frame through a rubber suspension.
Compared with the prior art, the technical scheme has the following advantages:
the motors are started according to the torque required by the vehicle, the starting is not interfered with each other, for example, when the torque requirement is large, multiple motors can be selected to output, when the torque requirement is small, less motors can be selected to output, and when one of the motors fails, the other motor correspondingly improves the torque, so that the risk of unpowered interruption is achieved, and the safe and reliable running of the vehicle is ensured. In addition, compared with the traditional electric drive axle, the electric drive axle has the advantages that two or more motors with smaller volume can be adopted, and the reduction gearbox assembly is combined to integrate the advantages of two reduction planetary gear sets, one reduction sun gear and one differential, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
The utility model is further described with reference to the following figures and examples.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of an electric drive axle according to the present invention;
FIG. 2 is a schematic structural diagram of a reduction gearbox assembly of a first embodiment of an electric drive axle of the present invention;
fig. 3 is a schematic structural view of a second embodiment of the electric drive axle of the present invention;
fig. 4 is a schematic structural view of a third embodiment of an electric drive axle according to the present invention;
fig. 5 is a schematic structural diagram of a reduction gearbox assembly of a third embodiment of an electric drive axle according to the present invention.
In the figure: 100 drive assembly, 110 motor, 200 reduction box assembly, 210 reduction planetary gear set, 211 input planetary gear, 212 intermediate planetary gear, 213 output planetary gear, 220 reduction sun gear, 230 differential, 300 wheel assembly, 310 wheel, 311 wheel hub, 312 tire, 320 speed change mechanism, 321 speed change ring gear, 322 speed change sun gear, 323 speed change planetary gear, 400 output shaft assembly, 410 first output shaft, 420 second output shaft, 430 third output shaft, 440 output flange.
Detailed Description
The following description is provided to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
As shown in fig. 1 to 4, the electric drive axle includes:
a driving assembly 100, said driving assembly 100 comprising at least two motors 110;
a reduction box assembly 200, wherein the reduction box assembly 200 comprises at least one reduction planetary gear set 210, a reduction sun gear 220 and a differential 230, the differential 230 comprises a power input part and a power output part, the power input part is coupled with the reduction sun gear 220, and the two motors 110 are respectively in meshing transmission with the reduction sun gear 220 through one reduction planetary gear set 210;
and the two wheel assemblies 300 are respectively arranged at two sides of the reduction gearbox assembly 200 and are respectively in transmission connection with the power output part.
The motor 110 drives the reduction sun gear 220 to rotate through the reduction planetary gear set 210, and drives the two wheel assemblies 300 to rotate at different speeds through the differential 230. The motors 110 are started according to the torque required by the vehicle, the starting is not interfered with each other, for example, when the torque requirement is large, multiple motor outputs can be selected, when the torque requirement is small, less motor outputs can be selected, and when one of the motors 110 fails, the other motor 110 correspondingly promotes the torque, so that the risk of unpowered interruption is achieved, and the safe and reliable running of the vehicle is ensured. In addition, compared with the conventional electric drive axle, the present embodiment can adopt two or more motors 110 with smaller volume, and combines the advantages of the reduction gearbox assembly 200 integrating two reduction planetary gear sets 210, a reduction sun gear 220 and the differential 230, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
Depending on the number of motors 110, the electric drive axle can be configured differently, as described in detail below with reference to three exemplary embodiments:
first embodiment
As shown in fig. 1, the number of the reduction planetary gear sets 210 is two, and the two reduction planetary gear sets 210 are respectively coupled to the power input portion of the differential 230, and each reduction planetary gear set 210 is respectively in transmission connection with two of the motors 110, at this time, the electric drive axle has four of the motors 110, wherein the two motors 110 in the same reduction planetary gear set 210 are in transmission connection with each other and are respectively disposed on two sides of the reduction gearbox assembly 200, and the two wheel assemblies 300 are also respectively disposed on two sides of the reduction gearbox assembly 200, and it can be seen that the number of the motors 110 on the same side of the reduction gearbox assembly 200 is two.
As shown in fig. 2, the reduction planetary gear set 210 includes:
the input planetary gear 211, the motor 110 is in transmission connection with the input planetary gear 211;
an intermediate planet 212, the intermediate planet 212 being in mesh with the input planet 211;
an output planetary gear 213, the output planetary gear 213 is in transmission connection with the intermediate planetary gear 212, and the output planetary gear 213 is meshed with the reduction sun gear 220.
Specifically, input planet wheel 211 with middle planet wheel 212 keeps in same vertical direction, motor 110 with input planet wheel 211 is coaxial, and two motor 110 divides to locate the left and right sides of input planet wheel 211, output planet wheel 213 with middle planet wheel 212 is coaxial, and is located middle planet wheel 212 right side, output planet wheel 213 with reduction sun gear 220 keeps in same vertical direction.
Wherein two the speed reduction planetary gear set 210 is along the axis symmetrical arrangement of speed reduction box subassembly 200 has guaranteed the reliable and stable of structure, in addition through setting up two speed reduction planetary gear set 210, so that speed reduction box subassembly 200 is the parallel gear structure of second grade, realizes slowing down reliably to adopt advantages such as mechanical differential, solve the problem of motor differential matching nature.
During operation, the motor 110 drives the input planet wheel 211 to rotate, the input planet wheel 211 drives the middle planet wheel 212 to rotate, and the middle planet wheel 212 drives the output planet wheel 213 to rotate, so that the output planet wheel 213 drives the two wheel assemblies 300 to rotate in a differential manner through the differential 230.
The driving assembly 100 further includes a plurality of gear shifting mechanisms, the number of the gear shifting mechanisms is equal to that of the electric motors 110, and each of the electric motors 110 is in transmission connection with the reduction planetary gear set 210 through a gear shifting mechanism.
The motor 110 and the reduction planetary gear set 210 are decoupled and coupled by arranging the gear shifting mechanism, and when the motor 110 fails, the motor 110 and the reduction planetary gear set 210 can be decoupled by the gear shifting mechanism to improve the torque of the other motor 110, so that the risk of unpowered interruption is achieved, and the safe and reliable running of a vehicle is ensured.
As shown in fig. 1, the electric drive axle further includes two output shaft assemblies 400, and one output shaft assembly 400 is connected between each wheel assembly 300 and the power output portion, so as to transmit torque. Wherein the wheel assembly 300 includes a wheel 310, the wheel 310 includes a hub 311 and a tire 312, i.e., the output shaft assembly 400 is connected to the hub 311 of the wheel assembly 300.
Specifically, the output shaft assembly 400 includes a first output shaft 410, a second output shaft 420, a third output shaft 430 and two output flanges 440, the output flanges 440 are connected between the second output shaft 420 and the first output shaft 410 and the third output shaft 430, respectively, the first output shaft 410 is in transmission connection with the power output portion, and the third output shaft 430 is in transmission connection with the change speed sun gear 322.
Second embodiment
As shown in fig. 3, the second embodiment of the electric drive axle is different from the first embodiment in that the wheel assembly 300 includes a speed change mechanism 320, and the power output portion is in transmission connection with the wheels 310 through the speed change mechanism 320 to realize speed change rotation of the wheels 310.
The shifting mechanism 320 includes:
a speed change ring gear 321;
a speed change sun gear 322, wherein the speed change sun gear 322 is positioned inside the speed change ring gear 321, and the speed change sun gear 322 is in transmission connection with the power output part;
at least two speed change planetary wheels 323, wherein the speed change planetary wheels 323 are engaged between the speed change ring gear 321 and the speed change sun gear 322, and the two speed change planetary wheels 323 are in transmission connection with the wheels 310.
The speed-change ring gear 321 is fixed, and the speed-change sun gear 322 is driven by the differential, and the speed-change planet gear 323 is driven by the speed-change sun gear 322 to rotate and rotate circumferentially, so as to drive the wheel 310 to rotate.
Preferably, the transmission mechanism 320 is integrally disposed inside the wheel 310, so as to ensure the compact structure of the wheel assembly 300.
Third embodiment
As shown in fig. 4 and 5, the second embodiment of the electric drive axle is different from the first embodiment in that the number of the motors 110 is two.
Specifically, the number of the reduction planetary gear set 210 is one, and the two motors 110 which are in transmission connection with the reduction planetary gear set 210 are respectively arranged at the left side and the right side of the reduction gearbox assembly 200.
In summary, the number of the motors 110 and the speed change mechanism 320 can be selectively arranged as required, wherein the motors 110 are started according to the torque required by the vehicle without interfering with each other, for example, when the torque requirement is large, more motors can be selected to output, and when the torque requirement is small, less motors can be selected to output, and when one of the motors 110 fails, the other motor 110 correspondingly increases the torque, so as to achieve the risk of unpowered interruption, and ensure the safe and reliable operation of the vehicle. In addition, compared with the conventional electric drive axle, the present embodiment can adopt two or more motors 110 with smaller volume, and combines the advantages of the reduction gearbox assembly 200 integrating two reduction planetary gear sets 210, a reduction sun gear 220 and the differential 230, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
The utility model further provides a vehicle which comprises the electric drive axle of the embodiment and a frame, wherein the electric drive axle is integrally fixed on the frame through a rubber suspension.
Because the vehicle adopts the electric drive axle of the embodiment, the vehicle refers to the embodiment by the beneficial effects brought by the electric drive axle, and in addition, the rubber suspension is adopted, so that the advantage of good shock absorption effect is achieved.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.
Claims (10)
1. An electric drive axle, comprising:
a drive assembly (100), said drive assembly (100) comprising at least two motors (110);
the speed reduction box assembly (200) comprises at least one speed reduction planetary gear set (210), a speed reduction sun gear (220) and a differential mechanism (230), wherein the differential mechanism (230) comprises a power input part and a power output part, the power input part is coupled with the speed reduction sun gear (220), and the two motors (110) are respectively in meshing transmission with the speed reduction sun gear (220) through the speed reduction planetary gear set (210);
the two wheel assemblies (300) are respectively arranged on two sides of the speed reduction box assembly (200) and are respectively in transmission connection with the power output part.
2. The electric drive axle according to claim 1, characterized in that said reduction planetary set (210) comprises:
the input planetary gear (211), the motor (110) is in transmission connection with the input planetary gear (211);
an intermediate planet (212), the intermediate planet (212) being in mesh with the input planet (211);
an output planetary gear (213), the output planetary gear (213) is in transmission connection with the intermediate planetary gear (212), and the output planetary gear (213) is meshed with the reduction sun gear (220).
3. The electric transaxle of claim 1 wherein the drive assembly (100) further comprises a plurality of shift mechanisms, the number of shift mechanisms corresponding to the number of electric motors (110), and each of the electric motors (110) is drivingly connected to the reduction planetary gear set (210) through a shift mechanism.
4. Electric drive axle according to claim 1, characterized in that the wheel assembly (300) comprises:
a wheel (310);
and the power output part is in transmission connection with the wheels (310) through the speed change mechanism (320).
5. Electric drive axle according to claim 4, characterized in that the gear shift mechanism (320) comprises:
a speed change ring gear (321);
a speed change sun gear (322), wherein the speed change sun gear (322) is positioned inside the speed change ring gear (321), and the speed change sun gear (322) is in transmission connection with the power output part;
at least two speed change planetary wheels (323), wherein the speed change planetary wheels (323) are meshed between the speed change ring gear (321) and the speed change sun gear (322), and the two speed change planetary wheels (323) are in transmission connection with the wheels (310).
6. Electric drive axle according to claim 4, characterized in that the gear shift mechanism (320) is arranged integrally inside the wheel (310).
7. The electric drive axle of claim 5, further comprising two output shaft assemblies (400), one output shaft assembly (400) being connected between each of said wheel assemblies (300) and said power take-off.
8. The electric transaxle of claim 7 wherein the output shaft assembly (400) comprises a first output shaft (410), a second output shaft (420), a third output shaft (430) and two output flanges (440), the output flanges (440) are connected between the second output shaft (420) and the first output shaft (410) and the third output shaft (430), respectively, and the first output shaft (410) is in transmission connection with the power take-off, and the third output shaft (430) is in transmission connection with the change sun gear (322).
9. Electric transaxle according to claim 1, characterized in that said two electric motors (110) of the same reduction planetary gear set (210) are drivingly connected to each other and are respectively disposed on both sides of said reduction box assembly (200).
10. A vehicle, characterized by comprising an electric transaxle of any one of claims 1 to 9, and further comprising a frame to which the electric transaxle is integrally fixed by a rubber suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415528.5U CN216733761U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415528.5U CN216733761U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216733761U true CN216733761U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220415528.5U Active CN216733761U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN216733761U (en) |
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2022
- 2022-02-28 CN CN202220415528.5U patent/CN216733761U/en active Active
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